Estudo dos parâmetros de suporte na impressão 3D por tecnologia de extrusão de material

• Autor(a) principal: Sato, Mauricio Yuki
• Data de Publicação: 2021
• Outros Autores: Ribeiro, Rodrigo Maldonado
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UTFPR (da Universidade Tecnológica Federal do Paraná (RIUT))
• Texto Completo: http://repositorio.utfpr.edu.br/jspui/handle/1/35260
• topic: Manufatura aditiva; Processo de extrusão; Impressão tridimensional; Additive manufacturing; Extrusion process; Three-dimensional printing; CNPQ::ENGENHARIAS::ENGENHARIA MECANICA::PROCESSOS DE FABRICACAO

The additive manufacturing technology has been gaining more space in consequence of the growing demand of higher complexity components. One area of this technology is the fused deposition modeling, which consists in feeding a plastic filament into a heated extruder. The heated polymer melts and is pushed through a calibrated nozzle to be placed on the print bed or on previous layers. It solidifies and adheres to it, resulting in the final model. With access to a Creality Ender 3 3D printer and the softwares Ultimaker Cura, Simplify3D and IdeaMaker, this work presents a study addressing how parameter for vertical separation distance and support infill percentage, in PLA printed parts, aiming study the surface quality and tension required to remove the support. Distance between support and model and support infill density were defined as variable parameters. Surface quality after removing the support, dimensional variation and strength required to remove part from support, were defined as parameters for evaluation. With the Design of Experiments methodology, factorial tests (tests of all possible combinations), defined visual inspection, dimensional analyses and strength required to remove part from support. The final results concluded that the surface quality increases and dimensional offset decreases, when higher density and closer to the model supports are used. On the other hand, less strength is required to remove the support with lower density and supports further away from the model.